Rigorous modeling and physical interpretation of terahertz near-field imaging using SNOM techniquesYanlu Li, Sergei Popov, Ari T. Friberg and Sergey SergeyevJ. Eur. Opt. Soc.-Rapid Publ., 4 (2009) 09007DOI: https://doi.org/10.2971/jeos.2009.09007